PatchTheCVECVE-2016-2399: Integer overflow in the quicktime_read_pascal function in libquicktime 1.2.4 and earlier allows remote attacke
CVE-2016-2399 is a high-severity flaw (CVSS 7.8) affecting libquicktime. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Integer overflow in the quicktime_read_pascal function in libquicktime 1.2.4 and earlier allows remote attackers to cause a denial of service or possibly have other unspecified impact via a crafted hdlr MP4 atom.
Why this priority
- High severity
- EPSS top 6%: very likely to be exploited
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.8 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 7.2% (top 6%) |
| CISA exploited list | No |
| Weakness | CWE-190 |
| Published | 2017-01-30 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Exploit-DB: libquicktime 1.2.4 - Integer Overflow
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2016-2399?
libquicktime: upgrade to newer than 1.2.4. Exact commands for each OS are on this page.
Is CVE-2016-2399 being exploited?
CVE-2016-2399 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2016-2399 affect?
CVE-2016-2399 affects libquicktime. Severity is high (CVSS 7.8). Integer overflow in the quicktime_read_pascal function in libquicktime 1.2.4 and earlier allows remote attackers to cause a denial of service or possibly have other unspecified impact via a crafted hdlr MP4 atom.
How urgent is CVE-2016-2399?
Priority 56/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference
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